The following problem deals with Simpson's paradox. A medical study compared a procedure by which kidney stones are removed throu puncture wound in the skin with other open surgical procedures. Removal with small puncture wound Other open surgic Small stones 234 successes 81 succes

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4. The following problem deals with Simpson's paradox.
A medical study compared a procedure by which kidney stones are removed through a 1-cm
puncture wound in the skin with other open surgical procedures.
Removal with small puncture wound | Other open surgical procedures
Small stones
81 successes
in 87 attempts
192 successes
in 263 attempts
234 successes
in 270 attempts
55 successes
in 80 attempts
Large stones
• Which procedure was more successful with small stones?
• Which procedure was more successful with large stones?
• Which procedure was more successful with kidney stones, regardless of size?
• Which procedure is better?
Transcribed Image Text:4. The following problem deals with Simpson's paradox. A medical study compared a procedure by which kidney stones are removed through a 1-cm puncture wound in the skin with other open surgical procedures. Removal with small puncture wound | Other open surgical procedures Small stones 81 successes in 87 attempts 192 successes in 263 attempts 234 successes in 270 attempts 55 successes in 80 attempts Large stones • Which procedure was more successful with small stones? • Which procedure was more successful with large stones? • Which procedure was more successful with kidney stones, regardless of size? • Which procedure is better?
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